Positive End Of 18650 Battery- Discussion On Electrodes

In this era of advancement and new-age technology, no one can deny the value of “battery” in their life. From remote to mobile devices, toys to electronic vehicles, every updated device is ready to function with the help of batteries. One of the most significant advantages of using electric-driven gadgets is that it can largely help in saving the environment.

For instance, a decade ago nobody could think of curbing pollution with electronic vehicles but thanks to the technology that today with the help of powered vehicles, the levels of pollution are decreasing. And one of the important components of these powered gadgets is lithium ion battery. Globally lithium ion batteries have built their lead in the battery industry.

Due to the higher energy density levels and low maintenance levels, these batteries are enjoying their share of popularity among all the sectors. Lithium-ion batteries are used in electric cars, laptops, flashlights, electric bikes, cameras, and the list is never-ending. Since these batteries are rechargeable and are made of light weighed lithium, these are preferred mostly by all the manufacturers across the globe.

In this article, you will get to explore about 18650 battery, which has revolutionized the game of portable devices. Keep reading on to gather in-depth details regarding its use and electrodes.

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Which end of an 18650 battery is positive?

Well, there are many people all around the world who remain confused regarding the positive end of a battery. If you go through this similar issue then, you do not have to worry more. But before that, it is essential for you to know the uses of 18650 batteries. The 18650 is a kind of rechargeable lithium ion battery.

The name 18650 denotes the size of the lithium ion battery cell. It comes in the size of 18mm X 65mm, but there can be negligible variation in the size of the battery. These batteries are generally used in all kinds of portable devices that include the following but do not limit to:

• Baby monitors

• Fitness bands and gadgets
  

• Flashlights
  

• Laptops
  

• Laser pointers
  

• Cameras
  

The 18650 is popularly used in portable devices and other high drain devices because of the superior quality and due low discharge rate. These batteries come in two patterns that are flat top and button top style. One of the significant features of this battery is they perform up to 400 to 500 charge cycles.

Now, there are hundreds of people who get puzzled about which end of the battery is positive. Since the 18650s are of the most popular lithium ion battery, you must know how to use them in a correct manner. If you do not wish your cell to explode due to improper use, then you need to be very diligent with its placing in the gadget. Generally, they have a positive terminal on one side, and the other end of the battery has a flat terminal.

How can you tell if an 18650 battery is positive or negative?

Well, in order to determine which end of the battery is positive or negative, it is important that you should know about the electrodes of the battery. In 18650, there is a coating of aluminum cobalt oxide in the positive electrode. On the other hand, the negative end is generally made up of silicon and graphite, which comes in the category of carbon material.

These batteries are cylindrical in shape, and all the cells are formed using a basic design. The battery carrying a nub on the positive end is known as a button top, and the cell that comes without a positive nub is known as a flat top. Most of the people get confused regarding the positive and negative side.

When a battery has a button top on the positive terminal, it becomes quite easy for the customers to recognize the positive and negative sides. To give you some better insights on this you can consider the below-listed points which you can use as the tips for finding the positive and negative end of 18650:

• Check the shape of the ends. If you find an end with a little raise in it, then it is the positive side of the battery, whereas the negative side of the battery will be flat.

• Check the logo of the cell. Typically, the logo is marked in such a manner that the left side of the logo is said to be the positive terminal, and the right side of the logo is considered as the negative side.
  

• To make things easier for yourself, you can consider using a multimeter. The line of the multimeter will show the “+” sign on the red colored line and “-“on the black colored line.
  

• Generally, on the positive side of a battery, it has a concave ring, while the other side will be negative.
  

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How many amps can an 18650 battery put out?

The amp hours refer to how many hours the number of amps can be drawn from the pack of a battery. An 18650 battery has 2 to 3.5 amp-hours. The capacity of these batteries ranges between 1800mAh to 3500mAh. It gives an output of about 3.7 volts. In order to maintain the longevity of lithium ion batteries, it is suggested that you should keep them at room temperature so that they do not get spoil due to the extremities of the temperature.

If you are planning to buy a 18650 battery for your portable device, then make sure that you purchase a battery that has a high capacity level. Refrain from buying them in bulk for future use as these batteries generally have a good life cycle. Keeping spare parts for an extended period of time can result in a deteriorating condition.

Some Final Words

Well, that is all about 18650 battery. You can use the points that were mentioned above if you face any confusion regarding the positive and negative terminals of the cell.